/* Copyright 2012 Oliver Katz

    This file is part of Theta.

    Theta is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>. */

#ifndef __THETA_API_CORE_H
#define __THETA_API_CORE_H

#include <iostream>
#include "../parsing/frame.h"
#include "../parsing/parsing.h"

#include <dirent.h>
#include <fcntl.h>
#include <dlfcn.h>

namespace api
{
	using namespace std;
	using namespace parsing;

	class Plugin
	{
	protected:
		string name;
		map<string, string> parseCfg(vector<string> cfg);
		vector<Frame> (*callback)(Frame, vector<string>, map<string, Clause>);

	public:
		Plugin();
		Plugin(string n);
		Plugin(string n, vector<Frame> (*c)(Frame, vector<string>, map<string, Clause>));
		string getName();
		volatile vector<Frame> apply(Frame c, vector<string> cfg, map<string, Clause> history);
	};

	class PluginLoader
	{
	private:
		string name;
		void *handle;
		vector<Frame> (*callback)(Frame, vector<string>, map<string, Clause>);

	public:
		PluginLoader(string path);
		~PluginLoader();
		Plugin load();
	};

	class PluginDB
	{
	private:
		vector<Plugin> plugins;

	public:
		PluginDB();
		void use(Plugin p);
		void loadPluginsFrom(string path);
	};
}

#endif